https://bugzilla.novell.com/show_bug.cgi?id=865188
https://bugzilla.novell.com/show_bug.cgi?id=865188#c4
Yarny Yarny changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
InfoProvider|Yarny@public-files.de |
--- Comment #4 from Yarny Yarny 2014-03-02 17:06:32 UTC ---
Created an attachment (id=580643)
--> (http://bugzilla.novell.com/attachment.cgi?id=580643)
minimal systemd units to trigger bug
The attached file contains two systemd units which, if installed, will trigger
the bug by repeatedly enabling and disabling NetworkManager.service . I failed
to trigger the bug without rebooting between the enable/disable steps, so the
unit files also continuously reboot the system until the bug shows up.
To see the bug, I performed the following steps (within VirtualBox, hosted on
openSUSE 13.1, x86_64):
* install openSUSE 13.1 from DVD, with minimal server selection
(4 CPU cores, 48GiB HDD, 768MiB RAM, no separate /home)
* install NetworkManager with zypper, thereby
remove patterns-openSUSE-minimal_base-conflicts
At this point it is a good idea to create a vbox snapshot to be able to restore
the current state after experiments.
* copy bug865188.{service,timer} to /etc/systemd/system
* enable bug865188.timer and debug-shell.service
* reboot (the vbox)
The vbox will now enter an endless reboot cycle, and it logs its actions into
the file /root/bug865188.log. To watch the progress, one can create a vbox
shared folder and make this file a symlink into said folder. Then one may
watch the log file on the host while the machine continuously reboots.
On my vbox test machine, something between 34 and 209 cycles are needed to
trigger the bug. Once the bug got triggered, the cycle ends (systemd can't
initiate a reboot anymore). The debug-shell on vt10 permits to inspect the
system.
I also attached the output of journalctl, of dmesg, and a core file I found in
the root directory after the bug occured.
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